APA (7th ed.) Citation

United States. Forest Service. Pacific Northwest Region. (1978). Timber sale preparation: Guide for helicopter logging. Dept. of Agriculturee, Forest Service, Pacific Northwest Region.

Chicago Style (17th ed.) Citation

United States. Forest Service. Pacific Northwest Region. Timber Sale Preparation: Guide for Helicopter Logging. [Portland, Or.]: Dept. of Agriculturee, Forest Service, Pacific Northwest Region, 1978.

MLA (9th ed.) Citation

United States. Forest Service. Pacific Northwest Region. Timber Sale Preparation: Guide for Helicopter Logging. Dept. of Agriculturee, Forest Service, Pacific Northwest Region, 1978.